Visualizing London's Skyline With A 3-D Map Of Tweets | Co.Exist | ideas + impact... This gives the feel that you are looking at map with out the detail and just block shapes

A colorful and chaotic city made in voxels.

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New York and Los Angeles based architectural firm FreelandBuck, has created an installation titled Slipstream. Slipstream translates a 2-dimensional digital line drawing into 3-dimensional space. The installation is a single drawing extruded through the gallery space and cut away to produce a set of interconnected spaces.